From the Cornell Lab of Ornithology in the USA:
Platform for Success
The Osprey is a large fish-eating hawk and a top consumer in the food chain. Like Bald Eagles, Ospreys declined following the widespread use of the pesticide DDT. Now that DDT has been banned in the United States for 40 years, the Osprey is a common sight in open habitats near water. Ospreys are good indicators of environmental toxins, and their recent rebound is a positive sign. Similar to eagles, the Osprey builds a conspicuous nest out of large sticks that is fairly easy to spot, if you know where to look. Ospreys seek out a high vantage point near water from which to build their bulky nest, usually atop a sturdy treetop or snag.
However, the Osprey will readily nest on an artificial structure, such as utility poles, boats, or even duck blinds, particularly when other options are limited. Because it can be undesirable to have an Osprey nest on one of these structures, many people encourage safer nesting by Ospreys by putting up an artificial nesting platform. Ospreys will readily use artificial platforms, and the following tips will help you to recruit a nesting pair of Ospreys to your area.
- Build community support for the Osprey by educating neighbors about this regal raptor. Talk to your local bird club, conservation organization, utility company, and/or parks department about providing in-kind or financial support for your project. Simply by asking, you may be able to secure donations of old utility poles, lumber, hardware supplies, or labor.
- Choose a location that is likely to attract Ospreys. The location for the platform should be within 1,600′ of water, and should be taller than any nearby trees (or at least 20′ tall, whichever is greater). If the platform is to be located in water, it should be at least 15′ over the water’s surface. Platforms can even be placed on utility poles with the aid of 6-8′ risers (work with your utility company to place platforms in areas where Ospreys are already using utility poles for nest sites). Ospreys are fairly tolerant of nearby human activity and of other Ospreys, so long as there is an adequate food supply to support nesting.
- Follow our construction plans for building the platform, and consider adding a predator guard to the post. Add a few large sticks to the bottom of the platform; this will entice Ospreys to check out your nest start.
- Monitor the platform for activity, and report your observations to NestWatch.org. You can also peek into the private lives of Ospreys by tuning in to the Lab of Ornithology’s Osprey Cam in May to watch nesting Ospreys in Montana, courtesy of Project Osprey.
Finally, share your success with us, and publicize it in your local newspaper! People will be curious about the platform, and this is the perfect chance to share the amazing Osprey with them. Coordinating a big project like this can bring together people from very disparate backgrounds–such as utility workers, anglers, and bird watchers–who might not otherwise work together for bird conservation. By taking on a project like this, you will not only be building a platform for success for the Osprey, but for future community partnerships, as well.
- Ospreys back in Britain (dearkitty1.wordpress.com)
- Cedar Rapids osprey nesting effort may turn bald eagles into bandits (thegazette.com)
- Waiting… for the male osprey (cynthialeonarddotme.wordpress.com)
- Everglades Osprey (incidentallearner.wordpress.com)
- Osprey relo: NY moves nest from atop disused crane (newsday.com)
- Wanted: Osprey Watchers as Citizen-Scientists (livescience.com)
- Osprey Family (itinerantneerdowell.wordpress.com)